class_docstr: A property accepting ``None`` or a value of some other type. 
class_docstr_tok: ["A","property","accepting","``","None","``","or","a","value","of","some","other","type","."]
code: def wrap(self, value: Any) -> Any:
      return None if value is None else super().wrap(value)
  
file_path: bokeh/src/bokeh/core/property/nullable.py
imports: from __future__ import annotations
  import logging
  from typing import Any, TypeVar, Union
  from ...util.deprecation import deprecated
  from ._sphinx import property_link, register_type_link, type_link
  from .bases import Init, Property, SingleParameterizedProperty, TypeOrInst
  from .required import Required
  from .singletons import Undefined
label_desc: Use image node_id 3 for calling the Nullable obj's underlying member method code with example usage: obj.wrap(value) and returns: unknown